html {
  overflow-x: hidden;
}
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: $font-16;
  color: $default-text;
}
// 清除浮动
.clear::after {
  display: table;
  content: '';
  clear: both;
}
// 个人习惯flex布局
.flex {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
// 手型箭头
.pointer {
  cursor: pointer;
}
// 纯白色字体
.light {
  color: $default-light;
}
// 主题色字体
.primary {
  color: $primary;
}
// 提示色字体
.placeholder {
  color: $placeholder;
}